Question

Solve x ^ 2 + 10x = -21.

x = 7 and x = 3
x = -7 and x = -3
x = - 7 and x = 3
x = 7 and x = -3

Answer 1

x= -7 and x= -3

Explanation:

x^2 + 10x = -21

= X^2 + 10x + 21 (Bring the -21 to the other side to make it positive)

factor the equation...

= (x+7)(x+3)

x= -7 and x= -3

if you need help on how to factor I can help

Answer 2

X = -7, -3

(AKA B)